Probabilistic Modelling of Microstructural Evolution in Zr Based Bulk Metallic Glass Matrix Composites during Solidification in Additive Manufacturing

Rafique, M 2018, 'Probabilistic Modelling of Microstructural Evolution in Zr Based Bulk Metallic Glass Matrix Composites during Solidification in Additive Manufacturing', Engineering, vol. 10, no. 4, pp. 1-12.


Document type: Journal Article
Collection: Journal Articles

Title Probabilistic Modelling of Microstructural Evolution in Zr Based Bulk Metallic Glass Matrix Composites during Solidification in Additive Manufacturing
Author(s) Rafique, M
Year 2018
Journal name Engineering
Volume number 10
Issue number 4
Start page 1
End page 12
Total pages 12
Publisher Scientific Research Publishing
Abstract Bulk metallic glass and their composites (BMGMCs) are a new class of materials which possess superior mechanical properties as compared to existing conventional materials. Owing to this, they are potential candidates for tomorrow's structural applications. However, they suffer from poor ductility and little or no toughness which render them brittle and they manifest catastrophic failure under applied force. Their behavior is dubious, unpredictable and requires extensive experimentation to arrive at conclusive results. In present study, an effort has been made to design bulk metallic glass matrix composites by the use of modeling and simulation. A probabilistic cellular automaton (CA) model is developed and described in present study by author which is used in conjunction with earlier developed deterministic model to predict microstructural evolution in Zr based BMGMCs in additive manufacturing liquid melt pool. It is elaborately described with an aim to arrive at quantitative relations which describe process and steps of operations. Results indicate that effect of incorporating all mass transfer and diffusion coefficients under transient conditions and precise determination of probability number play a vital role in refining the model and bringing it closer to a level that it could be compared to actual values. It is shown that proposed tailoring can account for microstructural evolution in metallic glasses.
Subject Aerospace Materials
Metals and Alloy Materials
Keyword(s) Bulk Metallic Glass Matrix Composites
Solidification
Cellular Automata Method
DOI - identifier 10.4236/eng.2018.104010
Copyright notice © 2018 by author and Scientific Research Publishing Inc.
ISSN 1947-3931
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